The morning news. [volume] (Savannah, Ga.) 1887-1900, 1887-05-30
Popular Science.

Experiments made in Germany prove
that beetS and other vegetables grown in
rows running north and south contain more
saccharine matter than those raised in rows
running east and west.
1t is generally conceded that steel shrinks
slightly in hardening. Iron does not ma
terially change in size, but goes out of shape
somewhat, owing to its imperfect homo
geneity. No one has ever satisfactorily ex-
planned why steel shrinks in hardening.
DR.. Brown-Sequard, the celebrated physi-
ologist, says he has discovered that the mo-
ment the skin of the neck is cut all sensi-
bility disappears, and that the best means of
resuscitating persons aSphyxiated by smoke,
coal-gas or water is to apply galvanism to
the skin of the neck--a method he has sue
cessfully employed.
The variable star Algol is so infinitely
distant from the earth that it takes thirty
years for its light to reach u.s. So we see it
as it was thirty years ago, not as it is to
day. When one of its dissertations occurs,
therefore, the one that is visible to us oc-
Cured a generation ago, and about 4. 900
such dissertations have taken place and start
ed on their way higher since the one we see
happened.
The Boston Journal of Commerce gives
the following for a clear shellac solution
Prepare first an alcoholic solution Of shellac
in the usual way: little benzole is then adj
tAd and the mixture well shaken. In the
course of from twenty-four to forty-eight
hours the fluid will have separated into two
distinct layers, an upper alcoholic stratum
perfectly clear and OF dark red color, and
under it turbid mixture containing the i'm
purities. The clear solution may be decant-
ed or drawn off,
Relative to making perfect weld Of steel
A.a k1actyettaf4k Nyt.ff oo.
"a job came to my shop a few days ago in
the shape Of two pieces OF three-quarter inch
round steel. welded together end to end. A
taper plug of steel was in one end of shaft
on which a corn burr was running The
plug OF steel was bearing against a like of
steel in the frame, the object Of this being
TO tighten the bIuTs. Owing to a loose box
on the shaft, the shaft got to jumping Civ
ing a side motion and creating friction
enough TO weld the two pieces of steel To-
gether as stated. The two pieces Of steel
were hardened"
A simple and easily applied test for wall
papers has been devised by Mr.. i. f. Gren-
sted. No apparatus is needed beyond an
ordinary gas jet, which is turned down TO
quite pin-point. until the fame be wholly
blue. When this has been done a strip of
the paper suspected to contain arsenic is cut
one-sixteenth OF an inch wide and an inch or
two long. Directly the edge OF this paper Is
brought into contact with the outer edge of
the gas flame "A gray coloration, due TO
arsenic, will be seen in the fame test No. ~.
The paper is burned little and the fumes
that are given off will be found TO have a
strong garlic-like odor, due to the vapor of
arsenic acid test No. 3. Take the paper
away from the flames and look at the char
red end--the carbon will be colored a bronze
red this is copper reduced by the carbon
test No. 81 Being now away from the
flame in fine state of division, the copper
is slightly oxidized by the air, and on plac-
ing the charred end q second time not too
far into the flame, the fame will now be
colored green by copper test No. A.. BY
this simple means it is possible 10 form an
opinion, without apparatus and without
leaving the room, as to whether any wall
paper contains arsenic, for copper aTseniato
IS commonly used in preparing wall papers.
Tests one and two would be yielded by any
paper containing arsenic in considerable
quantities.